This guy is fairly easy. I soloed him with my servant necro and bot. First clear the blood mages and pull them out into the hallway because they roam and will add, then pull the Lord... he's basically a tank n spank but make sure you're doing crush damage. When he respawns as a skeleton he'll pop a sanguinous mage along with him. If you are trying to solo him with a good farming setup, you can kill the nameless mage first and it will not respawn, after that the Lord Sanguis is a big pushover.